Mountains Form
The Rocky mountain chain started before they're were any plants or animals the only living things were incelled organisms.The Rocky Mountains were formed out of igneous and metamorphic rocks.The Himalayas formed after , when India and Asia crashed into eachother .This caused the the top of the Himalayas is filled with limestone that is normally found at the bottom of the ocean. |
The Ice Age
The ice age caused a big change in Earth's plant and wild life .During the ice age the earth was covered in ice sheets. |
Plants and Mammals
The evolution of grass happened.Grass had a bog impact on plant and animal life on Earth.Then the modern mammals began to appear because smaller species could stay alive because they were not alive before due to the mass extinction.After Lucy the Australopithecus was born she lived in Eastern Africa she liked to go in the forest with the other Australopithecus's .Although Lucy is similar to a human she is also in many ways similar to an ape.Finally modern humans appeared at the end of the Cenozoic Era.They first appeared in Africa .As time went along humans brains got bigger.Then as humans started to appear more and more the Earth was belived to have gotten warmer. |